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51 data scientist jobs at 28 companies in O'Fallon, MO

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Founding Machine Learning / AI Search Engineer
Cupertino, CA, US
$160k-$310k/yr On-SiteFull Time
HiringCafe
HiringCafe: Building a 100× better job search engine to take on Indeed and LinkedIn.
Build the ML and AI search behind HiringCafe — ranking, recommenders, retrieval, and LLM agents that surface jobs people would never find on their own.
Python, PyTorch, Elasticsearch, LLMs
Help us #BeatIndeed & #BeatLinkedIn
2mo
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Data Scientist
Falls Church or Fort Meade or Stuttgart or Tampa or Honolulu or Colorado Springs or Doral or Omaha or Scott Air Force Base
OnsiteFull Time
Agile Defense
Agile Defense: Provides IT modernization and cybersecurity for federal government agencies.
4+ YOE4+ years in data science or ML, proficient in Python/SQL, experience with Spark/Databricks, cloud data platforms; onsite DoD role.
Python, SQL, Spark, Databricks, PySpark, Tableau, Matplotlib, Plotly, MLflow, TensorFlow, scikit-learn, XGBoost
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22h
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Data Scientist
Scott AFB, Illinois, United States
$109k-$142k/yr OnsiteFull Time
Department of the Army
Department of the Army: A federal department that provides land-based defense and support services for national security and military operations.
1+ YOEBachelor's in math/statistics/computer science/data science or equivalent; 1 year specialized experience at GS-12 level applying advanced data analysis, modeling, and communicating technical results to varied audiences.
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1w
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Data Scientist
St. Louis, Missouri, United States
$88k-$123k/yr OnsiteFull Time
Nestlé
NestléSIX Swiss Exchange: NESN: Produces and sells a wide range of food and beverages.
3+ YOEBachelor's degree and 3+ years in data science; experience with Python, SQL, ML/optimization models, cloud platforms and MLOps practices.
Python, SQL, scikit-learn, pandas, PySpark, NumPy, Azure, AWS, GCP, MLflow, Azure ML, SageMaker, Kubeflow, Databricks, Snowflake, LangChain, Semantic Kernel, vector databases
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1w
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Data Scientist - Mid
Denver or Springfield or Sterling or St. Louis
$69k-$142k/yr OnsiteFull Time
CACI International
CACI InternationalNYSE: CACI: Provides information technology and engineering services for government agencies.
4+ YOEBachelor's in a quantitative field required, 4+ years data science experience, proficiency with Python or R and SQL, experience with statistical methods, data visualization, and TS/SCI clearance with polygraph.
Python, R, SQL, matplotlib, Tableau, ArcGIS, QGIS, GeoPandas, SAFe
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1w
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Senior Data Scientist
St. Louis, Missouri, United States
OnsiteFull Time
GRVTY
GRVTY: Develops defense technology, cyber, and intelligence software solutions.
Active TS/SCI clearance, senior-level Python and data science experience supporting intelligence missions, scalable data pipeline and visualization skills, ability to operate independently and lead technical initiatives.
Python, JEMA, Brewlytics, ArcGIS ModelBuilder
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1w
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Data Scientist - Mid
Denver or St. Louis or Sterling or Springfield
$69k-$142k/yr OnsiteFull Time
CACI
CACINYSE: CACI: Provides information technology and professional services to government clients.
4+ YOEBachelor's or equivalent,4+ years data science experience,proficiency in Python or R and SQL,statistics and visualization experience,TS/SCI clearance with polygraph willingness.
Python, R, SQL, matplotlib, Tableau, ArcGIS, QGIS, GeoPandas
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1mo
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Data Scientist
St. Louis or Brentwood or Richmond Heights or Clayton or Maplewood
HybridFull Time
Enterprise Mobility
Enterprise Mobility: Provider of vehicle rental and diverse mobility solutions.
2+ YOEMaster's in a statistical/mathematical field, 2+ years experience with predictive models/statistical inference/deep learning, proficiency in R or Python, experience with TensorFlow or PyTorch, authorized to work in the U.S., must reside in St. Louis area, presentation and security awareness skills.
TensorFlow, PyTorch, R, Python, Linux/Unix, SQL
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6d
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Data Scientist 728
St. Louis, Missouri, United States
OnsiteFull Time
Freedom Technology Solutions Group
Freedom Technology Solutions Group: Provides geospatial and software engineering solutions for national security agencies.
1+ YOEActive TS/SCI clearance, experience building statistical and ML models, geospatial and imagery data experience preferred, proficiency with Python and analytical toolchains, strong communication and requirements gathering skills.
Python, Pandas, NumPy, SciPy, Jupyter, SQL, PostgreSQL, PostGIS, Aurora, Oracle, Redis, Elasticache, AWS (S3, Athena, Glue, Lambda, ECS), Docker, GitLab CI/CD, Linux, GDAL, Rasterio, OGR, GeoPandas, ArcGIS, QGIS, Plotly, Matplotlib, Tableau, Microsoft Power BI
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1mo
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Senior Data Scientist
St. Louis, Missouri, United States
OnsiteFull Time
Tiger Analytics
Tiger Analytics: Provides AI and advanced analytics consulting for global enterprises.
8+ YOE8 years data science/ML experience; hands-on Python and SQL; experience with A/B testing, causal ML/matching models/AutoML; strong statistical knowledge, problem-solving, and stakeholder communication.
Python, SQL, AutoML
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4w
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Data Scientist I
St. Louis, Missouri, United States
$70k-$110k/yr OnsiteFull Time
Esri
Esri: Developing software for digital mapping and spatial data analysis.
1+ YOE1+ years professional experience with practical machine learning, generative AI/LLMs, applied statistics, Python, data visualization, strong communication, US citizenship and ability to maintain a US security clearance, Bachelor's in a STEM field.
Python, Esri software, GIS, IoT, large language models
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3w
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Lead Data Scientist, AdTech
Chicago or Columbus or Detroit or Kansas City or Madison or Saint Louis
$175k-$200k/yr RemoteFull Time
Launch Potato
Launch Potato: Digital media operating a portfolio of consumer brands.
5+ YOE5+ years applied data science experience; hands-on ML in AWS; experience in digital/performance marketing or leadgen; building adtech algorithms; strong modeling fundamentals; expertise in Python and SQL.
AWS, Python, SQL, Looker, Google, Meta
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1d
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Scientist III, Data Sciences
St. Louis, Missouri, United States
HybridFull Time
Thermo Fisher Scientific
Thermo Fisher ScientificNYSE: TMO: Sells equipment and chemicals for scientific research and healthcare.
3+ YOEAdvanced analytics and ML experience using Python,R,SQL,3+ years (advanced degree) or 5+ years (bachelor's); cloud, big data, ML frameworks, visualization, ETL, NLP experience valued.
Python, R, SQL, scikit-learn, TensorFlow, PyTorch, AWS, Azure, Spark, Databricks, Power BI, Tableau, Git
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1w
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Data Scientist, Senior
St. Louis, Missouri, United States
$120k-$150k/yr OnsiteFull Time
Chopine Analytic Solutions
Chopine Analytic Solutions: Provides intelligence analysis and operational support to defense agencies.
TS/SCI clearance required (CI/Poly obtainable), intelligence analysis experience, senior-level Python scripting, designing scalable processes for large datasets, creating visualizations, and managing multiple projects.
Python, JEMA, Brewlytics, ArcModel Builder
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1mo
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Sr. Exploitation Specialist/Data Scientist (TS/SCI)
St. Louis, Missouri, United States
OnsiteFull Time
Culmen International
Culmen International: Provides specialized mission support and security services to governments.
10+ YOETS/SCI clearance required (CI/Poly eligible), 10+ years relevant experience, strong Python and data science skills, hands-on Esri ArcGIS Pro/Online experience, AI/ML, data visualization, database and analytic automation expertise.
Esri ArcGIS Pro, ArcGIS Online, Safehouse, ICGIS, Python, Pandas, NumPy, SciPy, Matplotlib, Plotly, Dash, Bokeh, HTML5, JavaScript, ArcObjects, Model Builder, Oracle, SQL, ArcGIS Desktop, ArcGIS Server, Arc SDE, ArcIMS, Microsoft .NET, C++, Java
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4d
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GEOINT Data Scientist (TS/SCI)
St Louis, Missouri, United States
OnsiteFull Time
Xcellent Technology Solutions
Xcellent Technology Solutions: Provides geospatial intelligence and IT services to federal agencies.
Active TS/SCI clearance with CI poly ability; advanced degree or equivalent experience (Master's+5/BS+7/AS+8/10+ years); strong Python and SQL; ArcGIS familiarity; workflow automation and defensible analytic model experience.
Python, SQL, ArcGIS
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6d
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Senior Exploitation Specialist / Data Scientist
Springfield or Saint Louis
OnsiteFull Time
B&A
B&A: Provides IT systems integration and data services to federal agencies.
10+ YOEActive TS clearance, 10+ years relevant experience, bachelor\u0002s degree, intelligence/data science background, senior-level Python scripting, scalable data process design, and visualization skills.
Python, JEMA, Brewlytics, ArcGIS Model Builder
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3mo
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Sr AI Engineer / Data Scientist
Chesterfield, Missouri, United States
RemoteFull Time, Contract
Koantek
Koantek: Systems integrator delivering Databricks-powered data and AI solutions.
4+ YOE4+ years hands-on experience building, deploying, and managing ML models in production; strong client-facing delivery mindset; expertise in ML, MLOps, GenAI/NLP.
Docker, Databricks, MLOps, LLMs, NLP, Apache Spark, CI/CD
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1mo
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Maven Exploitation Specialist/ Data Scientist (Expert)
Springfield or St. Louis
$210k-$230k/yr OnsiteFull Time
BTS Software Solutions
BTS Software Solutions: Provides software engineering and technical solutions for defense missions.
4+ YOETS/SCI clearance (willing to take CI Poly),4+ years with SQL/NoSQL and cloud,API experience,Python/JavaScript/Java,building and maintaining ETL/data pipelines,metadata management,and strong written/verbal communication.
SQL, NoSQL, APIs, Python, JavaScript, Java, JSON, parquet, XML, CSV, GitLab, NGA CORE, NGA MLOps
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1mo
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Scientist, Bioinformatics
St. Louis or United States
$87k-$154k/yr OnsiteFull Time
Bruker
BrukerNASDAQ: BRKR: Develops and manufactures high-performance scientific and diagnostic instruments.
PhD in bioinformatics or related field, strong Python skills, experience with ML/deep learning applied to imaging or single-cell data, ability to design reusable analysis pipelines and communicate with wet-lab scientists.
Python, R, MATLAB, CellScapeTM
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1mo
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Senior AI Scientist
Arizona or Tempe or Missouri or St. Louis or United States
HybridFull Time
Edward Jones
Edward Jones: Offers investment management and financial planning through local branches.
9+ YOE9+ years applied data science experience; MS required (PhD preferred) in a quantitative field; strong Python, SQL, Git, Databricks, CI/CD experience; expertise in statistical modeling, ML/GenAI/optimization; productionizing models and influencing stakeholders.
Python, SQL, Git, Databricks, CI/CD
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